What things to the children find in knot-hole To Kill a Mockingbird?

The children, Jem and Scout, find several treasures in the knothole of a tree near their home. These treasures are left there by their enigmatic neighbor, Boo Radley. The first treasure they discover is a gum wrapper. Then they find a pocket watch, medals, and a two-headed nickel. These trinkets symbolize Boo's kind and mysterious nature and hint at his desire for friendship with the children. In turn, Jem and Scout's discovery of these items sparks their imagination and curiosity about Boo, inspiring many of their adventures throughout the novel.